- Smartphone WiFi Signals Can Leak Your Keystrokes, Passwords, and PINs. From Beeling Computer.
The way users move fingers across a phone’s touchscreen alters the WiFi signals transmitted by a mobile phone, causing interruptions that an attacker can intercept, analyze, and reverse engineer to accurately guess what the user has typed on his phone or in password input fields.
This type of attack, nicknamed WindTalker, is only possible when the attacker controls a rogue WiFi access point to collect WiFi signal disturbances.
Control over the WiFi access point is also imperial since the attacker must also know when to collect WiFi signals from the victim, in order to capture the exact moment when the target enters a PIN or password.